bash 检查目录是否包含特定的子目录
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/28335230/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Check if a directory contains a particular subdirectory
提问by Rumen Hristov
I am trying to write a shell script, which checks if a given directory contains a particularly named subdirectory. I am passing the Parent directory as a first argument and only the name for the child directory. I want the script to go through the contents of the Parent and see if it contains a file of type directory, which is named with the name I am passing in for Child.
我正在尝试编写一个 shell 脚本，它检查给定的目录是否包含一个特别命名的子目录。我将父目录作为第一个参数传递，并且只传递子目录的名称。我希望脚本遍历 Parent 的内容，看看它是否包含一个目录类型的文件，该文件以我为 Child 传递的名称命名。
This is my code. In it I am trying to pipe the output of lson the Parent to the egrepcommand. I am trying to write a regular expression that checks to see if the output of lshas a name that matches (not identically. just somewhere in its name) my child name.
这是我的代码。在其中，我试图ls将 Parent 上的输出通过管道传输到egrep命令。我正在尝试编写一个正则表达式来检查输出的ls名称是否与我的孩子的名字匹配（不完全相同。只是在它的名字中的某个地方）。
PARENT=
CHILD=
DIRNUM=$(ls -l $PARENT | egrep -c '< $CHILD >')
echo $DIRNUM
回答by Etan Reisner
Don't do this. Don't parse ls.
不要这样做。不要解析ls。
Just check for the file/directory directly with the [/testbuilt-in/command.
只需使用[/testbuilt-in/command直接检查文件/目录。
path=$parent/$child
if [ -d "$path" ]; then
echo "$path exists."
else
echo "$path does not exist."
fi
You'll note that I switched case on the variable names. ALL_UPPER variables are "reserved" for the shell's use you shouldn't use any.
您会注意到我在变量名称上切换了大小写。ALL_UPPER 变量是“保留”的，供 shell 使用，您不应使用任何变量。
回答by Claudio Corsi
Use the find command like the following:
使用 find 命令，如下所示：
# find $parent -name \*${child}\* -and -type d
The type option is to insure that the found name is a directory.
type 选项是为了确保找到的名称是一个目录。
This command will find all sub-directories located within $parent that contain $child in its name
此命令将查找位于 $parent 中名称中包含 $child 的所有子目录
